Pressure swing adsorption technology is mainly applied to the recycling of industrial tail gas rich in CO. People may not know that China is the world's largest manufacturer of steel, calcium carbide and yellow phosphorus, which accounts for more than half of the world's production. A large amount of industrial exhaust will be released when manufacturing these fundamental industrial products. In the past, these industrial tail gases were discharged into the air directly or after combustion. With the increasing load and emitted gases, a gradual deterioration of the atmospheric environment will take shape, such as haze and acid gases which may even affect the crop growth.

The exhausts like CO mentioned above are waste gases in the industry. Most enterprises treat them by combustion generally, which however not only causes a large amount of carbon dioxide to be discharged into the atmosphere forming the greenhouse effect but also is an inefficient utilization of energy. If these exhaust gases are purified by pressure swing adsorption technology until the purity of CO is increased to 99% or more, with high utilization value, they can be subsequently applied in chemical synthesis. After a series of chemical reactions, they finally become the plastic bottles, quick-drying T-shirts and other commodities in our daily lives. It's good for both energy conservation and emission reduction, thus promoting the environmental protection.